Minolta MAGICOLOR 2 Manual page 31

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For a multiple copy document with collation On, there must be
enough display list memory to hold the display list blocks for all pages
in the collation range. (For more information on Display List blocks,
see "Display List" in chapter 5, "Additional Technical Information," in
the Reference manual.) If there's not enough memory, then a collation
boundary is forced after the last compiled page of the collation range.
This mechanism of introducing a forced boundary—or breaking a
document down into several smaller, more manageable sets—is
known as chunk collation. For example, in the following illustration,
copies "a" and "b" of each set must be manually combined to create
one collated document. The order of printing is copy 1(a), copy 2(a),
copy 3(a), copy 4(a), copy 1(b), copy 2(b), copy 3(b), and copy 4(b).
» Note: If chunk collation occurs, you may want to enable header and
trailer pages to help you determine the beginning and end of each
collated sequence.
Operator Control/Collation
On, Off
Off